asyncrat | bca2d879546bf8f781b596406ee18f1601b03edef786d19b5ba3d662d24b5ea0

Analysis

max time kernel
60s
max time network
24s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
25/09/2026, 19:52

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General

Target
bca2d879546bf8f781b596406ee18f1601b03edef786d19b5ba3d662d24b5ea0.exe
Size 5.2MB
Sample260925-ylvmcswt9q
SHA256 bca2d879546bf8f781b596406ee18f1601b03edef786d19b5ba3d662d24b5ea0
MD5 52076a024f4d976e8a5229551d7ad215
SHA1 7872532b3f89b882a4188d6cd3a4c1297fa732a4
SHA512 c01b310301ebbe4031fb0edf49e1b26ff0d5ae330d2ac0c9097290affb308707710bd245248569bb78305436d53a7cb07a9f25a3faac8ea97fa2f8849f09e1f0
SSDEEP 49152:+UreSuCrpmDyeVCb45KABDWIM6RTcdIiYgRtwp5wsjG677I9pKabKpkphU:T7uEoyeVCb4MABpbRwQgRcwxH6
TLSH
T18E466C1C17E89E2FDF6E53B185A1CC316BF1EC16B332AB06218575AD583EBD0590236B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

tcp://nafigatieto720-bit-63938.portmap.host:63938:12521

Mutex

9X2x1gTVTrxT

Attributes

delay
3
install
true
install_file
HealthService.exe
install_folder
%AppData%

aes.plain

Signatures

Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
3224	cmd.exe
972	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bca2d879546bf8f781b596406ee18f1601b03edef786d19b5ba3d662d24b5ea0.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4508	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3316	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\bca2d879546bf8f781b596406ee18f1601b03edef786d19b5ba3d662d24b5ea0.exe
"C:\Users\Admin\AppData\Local\Temp\bca2d879546bf8f781b596406ee18f1601b03edef786d19b5ba3d662d24b5ea0.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:3008
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "HealthService" /tr '"C:\Users\Admin\AppData\Roaming\HealthService.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  PID:3224
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "HealthService" /tr '"C:\Users\Admin\AppData\Roaming\HealthService.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3316
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp29B6.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  PID:972
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4508
- - C:\Users\Admin\AppData\Roaming\HealthService.exe
    "C:\Users\Admin\AppData\Roaming\HealthService.exe"
    3⤵
    PID:5780

C:\Users\Admin\AppData\Roaming\HealthService.exe
"C:\Users\Admin\AppData\Roaming\HealthService.exe"
1⤵
PID:6092

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmp29B6.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp29B6.tmp.bat
Size 157B
SHA256 fe4119d95cb144dc9b4f0bd1e88fb1bbfc6ac1ee92ee25688677679dfb2eac44
MD5 9afd157a783f98e2962c665e7078d4b8
SHA1 3ba37eda385ed2636190904a8640291683d171cb
SHA512 c0ef6bf407a16f0f812de93bbe508b1e70372f124e5a3b77469145706d2c27a5236d1ea8ce81eb9701bebeb7bcccb2875b13aa7bb0eee49bc5471ce426d44257
TLSH
T143C08C52A6C5EA6E2805141306BAA48D91B2A82D3E44BB10C748440962C088EE89924A
MD5 SHA1 SHA512 TLSH

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HealthService.exe

Path C:\Users\Admin\AppData\Roaming\HealthService.exe
Size 5.2MB
SHA256 bca2d879546bf8f781b596406ee18f1601b03edef786d19b5ba3d662d24b5ea0
MD5 52076a024f4d976e8a5229551d7ad215
SHA1 7872532b3f89b882a4188d6cd3a4c1297fa732a4
SHA512 c01b310301ebbe4031fb0edf49e1b26ff0d5ae330d2ac0c9097290affb308707710bd245248569bb78305436d53a7cb07a9f25a3faac8ea97fa2f8849f09e1f0
SSDEEP 49152:+UreSuCrpmDyeVCb45KABDWIM6RTcdIiYgRtwp5wsjG677I9pKabKpkphU:T7uEoyeVCb4MABpbRwQgRcwxH6
TLSH
T18E466C1C17E89E2FDF6E53B185A1CC316BF1EC16B332AB06218575AD583EBD0590236B
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3008-0-0x0000000074472000-0x0000000074473000-memory.dmp

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memory/3008-1-0x00000000000C0000-0x00000000005EE000-memory.dmp

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memory/3008-2-0x0000000074460000-0x0000000074C1C000-memory.dmp

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memory/3008-3-0x0000000005140000-0x00000000051DC000-memory.dmp

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memory/3008-8-0x0000000074460000-0x0000000074C1C000-memory.dmp

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memory/6092-12-0x0000000074460000-0x0000000074C1C000-memory.dmp

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memory/6092-14-0x0000000074460000-0x0000000074C1C000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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